package com.usian.wemedia.service.Impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.usian.common.fsdfs.FastDFSClientUtil;
import com.usian.model.common.dtos.PageResponseResult;
import com.usian.model.common.dtos.ResponseResult;
import com.usian.model.common.enums.AppHttpCodeEnum;
import com.usian.model.media.dtos.WmMaterialDto;
import com.usian.model.media.pojos.WmMaterial;
import com.usian.model.media.pojos.WmNewsMaterial;
import com.usian.model.media.pojos.WmUser;
import com.usian.utils.threadlocal.WmThreadLocalUtils;
import com.usian.wemedia.mapper.WmMaterialMapper;
import com.usian.wemedia.mapper.WmNewsMaterialMapper;
import com.usian.wemedia.service.WmMaterialService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.util.Date;
import java.util.List;
import java.util.stream.Collectors;

@Service
public class WmMaterialServiceImpl  extends ServiceImpl<WmMaterialMapper, WmMaterial> implements WmMaterialService {

    @Autowired
    private FastDFSClientUtil fastDFSClientUtil;
    @Value("${fileServerUrl}")
    private String imageurl;

    @Autowired
    private WmNewsMaterialMapper wmNewsMaterialMapper;


    @Override
    public ResponseResult uploadPicture(MultipartFile file) {
        try {

            //1检验文件完整性
            if (file==null){
                return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);   //无效参数
            }
            //2完成上传得到fullpath
            String path=fastDFSClientUtil.uploadFile(file);
            //3insert wmmaterial表
            WmMaterial wmMaterial=new WmMaterial();
            wmMaterial.setUrl(path);
            wmMaterial.setIsCollection((short)0);
            WmUser wmUser= WmThreadLocalUtils.getUser();
            if (wmUser!=null){
                wmMaterial.setUserId(wmUser.getId());  //获取当前用户登陆的id
            }
            wmMaterial.setType((short)0);
            wmMaterial.setCreatedTime(new Date());
            this.save(wmMaterial);

        }catch (Exception e){
            e.printStackTrace();
        }

        return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
    }

    @Override
    public ResponseResult findList(WmMaterialDto dto) {
        if (dto==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        dto.checkParam();
        LambdaQueryWrapper<WmMaterial>lambdaQueryWrapper=new LambdaQueryWrapper<>();
        WmUser user=WmThreadLocalUtils.getUser();
        if (user!=null){
            lambdaQueryWrapper.eq(WmMaterial::getId,user.getId());
        }
        if (dto.getIsCollection()!=null){
            lambdaQueryWrapper.eq(WmMaterial::getIsCollection,dto.getIsCollection());
        }
        lambdaQueryWrapper.orderByDesc(WmMaterial::getCreatedTime);

        Page page=new Page(dto.getPage(),dto.getSize());
        IPage result=page(page,lambdaQueryWrapper);
        ResponseResult responseResult=new PageResponseResult(dto.getPage(),dto.getSize(),(int)result.getTotal());

        List<WmMaterial>wmMaterialList=result.getRecords();
        List<WmMaterial> list = wmMaterialList.stream().map(a -> {
            a.setUrl(imageurl.concat(a.getUrl()));
            return a;
        }).collect(Collectors.toList());

//        for (WmMaterial w:wmMaterialList){
//            w.setUrl(imageurl.concat(w.getUrl()));
//        }

        responseResult.setData(list);


        return responseResult;
    }

    @Override
    public ResponseResult delPicture(Integer id) {
        if (id==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        WmMaterial wmMaterial=this.getById(id);
        if (wmMaterial==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        //根据素材id是否被引用
        QueryWrapper<WmNewsMaterial>queryWrapper=new QueryWrapper<>();
        queryWrapper.lambda().eq(WmNewsMaterial::getMaterialId,id);
        Integer count = wmNewsMaterialMapper.selectCount(queryWrapper);
        if (count>0){
            //有引用
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_EXIST);
        }

        //删除fastdfs图片
        fastDFSClientUtil.delFile(wmMaterial.getUrl());

        //删除素材表信息
        this.removeById(id);

        return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
    }
}
